CN101893124B - Pressure management control valve assembly - Google Patents
Pressure management control valve assembly Download PDFInfo
- Publication number
- CN101893124B CN101893124B CN201010240142.7A CN201010240142A CN101893124B CN 101893124 B CN101893124 B CN 101893124B CN 201010240142 A CN201010240142 A CN 201010240142A CN 101893124 B CN101893124 B CN 101893124B
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- China
- Prior art keywords
- pressure
- fluid
- assembly
- pressure chamber
- pilot valve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
- F16K31/1268—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like with a plurality of the diaphragms
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/04—Control of fluid pressure without auxiliary power
- G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
- G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
- G05D16/0644—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator
- G05D16/0672—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator using several spring-loaded membranes
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/14—Control of fluid pressure with auxiliary non-electric power
- G05D16/16—Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid
- G05D16/163—Control of fluid pressure with auxiliary non-electric power derived from the controlled fluid using membranes within the main valve
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7758—Pilot or servo controlled
- Y10T137/7762—Fluid pressure type
- Y10T137/7764—Choked or throttled pressure type
- Y10T137/7768—Pilot controls supply to pressure chamber
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7758—Pilot or servo controlled
- Y10T137/7762—Fluid pressure type
- Y10T137/7769—Single acting fluid servo
- Y10T137/777—Spring biased
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86574—Supply and exhaust
- Y10T137/86582—Pilot-actuated
- Y10T137/8659—Variable orifice-type modulator
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Pressure (AREA)
- Fluid-Driven Valves (AREA)
Abstract
An adjustable hydraulically operated pressure management control pilot assembly has first and second diaphragm assemblies which define two fluid pressure chambers. Varying the pressure between these two fluid chambers modulates the control pilot assembly between adjusted low and high set points, which can be used to control high and low pressures downstream of a pressure reducing valve of a water supply system.
Description
Technical field
The present invention relates generally to pilot control (control pilot) and stress management system, as those are used in municipal water utilities system.More particularly, the present invention relates to the first guide assembly of adjustable hydraulic operation for management system pressure condition.
Background technique
The adaptability of the supply of water main and municipal water utilities system and pressure control and this supply and supply Infrastructure changes everywhere.Traditionally, this water system is arranged so that a little to go up and all keep minimum hydraulic pressure in the institute of system.This normally carries out with reference to leading pressure under multiple transition point, and these transition point comprise supply source in peak or the dried up district of top, Zhong sea level, pool point farthest.But, in whole day, always being there is to sizable fluctuation in the demand of water, and also have sizable seasonal variations, this makes pressure maximum conventionally high than necessary minimum value.
In the water supply industry of All Around The World scope, have a common understanding, that example that is exactly water loss is common in many water distribution systems, and water loss level may be higher in many examples.Damage by water vector in system is because various leakages source causes, such as improper fixing piping flange connects, and flange gasket leakage, valve seal leaks, seal failure, pipe outmoded (aperture explosion), accessory is loosening, and tap leaks, etc.These summations of leaking source can amount to damage by water vector substantially.Inlet point pressure is always remained and providing the sufficient necessary level of pressure can cause the pressure of Consumer's premises during low demand excessive at far point during high demand, thus the waste of the water that increase is caused by unnecessary consumption and leakage.The volume of the water by leakage loss is directly related with the pressure in system.
Automatic pressure reducing valve is for water distribution system, and so that pressure decreased is arrived to predetermined value or secondary point, but it is enough does not make the normal component such as Household hot water tank stand overvoltage.This secondary point is determined conventionally, and the pressure minimum that meets water utilities standard is provided, particularly lower than maximum or " peak value " demand condition that may occur in the time putting out a fire.The desired pressure of peak demand is significantly higher than desired pressure under " non-peak value " or typical case's condition at night conventionally.Under low demand condition, not only leak and form the higher proportion part of aggregate demand, and research also implies that in fact the area of some leakage holes can increase with pressure, if keep too much pressure will increase the weight of this problem always.
Like this, in water supply industry, wish to reduce system hydraulic pressure during low demand.From practical perspective, the amount of the water loss that the hydraulic pressure during low demand in reduction system can cause reduction system leak.Management of water pressure also can be reduced in the occurrence frequency of the piping failure in the Infrastructure ageing process of the network of rivers.Lower pressure means that pipeline bears lower stress during low demand.Along with the past of time, the low stress of the accumulation to pipeline foundation facility helps to increase the expected life of the pipeline in water distribution system.
Therefore, have the lasting demand to adjustable hydraulic operating pressure management pilot control assembly, it can be used to set the spikes/low-points of water pressure, with control system hydraulic pressure between low demand phase and high demand phase.Also there is the lasting demand to the improved flow-drive valve system for being automatically controlled at the downstream pressure between selected set point.The present invention meets these demands and other associated advantages is provided.
Summary of the invention
The present invention relates to pilot valve assembly, it controls the reduction valve of water system between high pressure and low pressure set point, with control system hydraulic pressure between low demand phase and high demand phase.
This pilot valve assembly of the present invention generally includes the body that limits inner chamber.The first septum assembly that is positioned at this inner chamber comprises first barrier film with first surface, and first surface limits and the first fluid pressure chamber that is formed on the fluid passage in fluid communication in this body at least partly.The first septum assembly also comprises the first biased member for this first barrier film of bias voltage.The second septum assembly is positioned at this inner chamber and comprises the second barrier film, and this second barrier film has the first surface of this first fluid pressure chamber of at least part of restriction and limits at least partly the second surface of this second fluid pressure chamber.This second fluid pressure chamber is communicated with the fluid input and the fluid output fluid that are formed in this body.Gate is between this fluid input and this fluid output, for controlling the fluid stream by this second fluid pressure chamber.Second this gate of biased member bias voltage and this second barrier film.Hydrodynamic pressure in the outlet port in this second chamber equals in fact the pressure in this reduction valve outlet port.
This assembly comprises for selectivity adjusts this first biased member to adjust the device of high pressure set point.Typically, this first biased member comprises spring, and this regulating device comprises the first adjustment screw being connected with this spring.This of this assembly the second biased member typically comprises the spring towards this gate of closed position bias voltage.
In mode of execution particularly preferably, the ratio of the area of this first and second barrier film is approximately 1: 1.This second septum assembly comprises bar, and it extends into this first septum assembly and moves slidably relative to the first septum assembly in the time that this first septum assembly moves relative to each other with this second septum assembly.This first septum assembly comprises the first and second blocks that move for limiting this bar.This first and second block moves in the time that this first barrier film moves.The second device of adjusting screw form is used for adjusting this first block to adjust low-pressure set point.
When in the time that the hydrodynamic pressure of this first fluid pressure chamber is equal to or less than low-pressure set point, this gate moves to limit the fluid flow through this second chamber towards closed position.When in the time that this hydrodynamic pressure of this first fluid pressure chamber is equal to or higher than high pressure set point, this gate moves towards enable possition so that fluid stream flows by this second chamber.
In one embodiment, the fluid in this first and second hydrodynamic pressures chamber of this pilot valve assembly is communicated with isolation mutually.In another embodiment, fluid passage forms between them, and its relative position according to this first and second septum assembly is opened or closed.
This second fluid pressure chamber fluid is connected to the valve actuation pressure chamber of this reduction valve.Fixed throttle port is located between the entrance of this second fluid pressure chamber and the entrance of this reduction valve.
In one embodiment, at least one electrically-controlled valve fluid is connected to this first fluid pressure control cavity to adjust the hydrodynamic pressure in this first fluid pressure chamber.Typically, this at least one electrically-controlled valve comprises the first electrically-controlled valve, and its fluid is connected to the entrance of first fluid pressure control cavity and reduction valve.The second electrically-controlled valve fluid is connected to the outlet of first fluid pressure control cavity and this reduction valve.Electronic controller is used for controlling this first and second electrically-controlled valve.
In another embodiment, variable restriction assembly is operably connected on this reduction valve.This settable orifice assembly is connected between the outlet that the entrance of this first fluid pressure chamber and its fluid be connected to this reduction valve and has variable fluid flow at its fluid.The variable restriction fluid of this settable orifice assembly bar that flows is connected on the valve of reduction valve and is located at the mobile entrance of variable restrictor assembly and flows between outlet.In the time that the valve of reduction valve opens and closes, change through the fluid flow of this settable orifice assembly.
By reference to the accompanying drawings, according to below describing in more detail, the feature that the present invention is other and advantage will become obviously, and wherein accompanying drawing illustrates principle of the present invention by the mode of example.
Brief description of the drawings
Accompanying drawing illustrates the present invention.In these figure:
Fig. 1 is the sectional drawing that embodies pilot control of the present invention;
Fig. 2 is the amplification sectional view in the region " 2 " in Fig. 1;
Fig. 3 is the generalized section that represents the pilot control under high flow capacity state;
Fig. 4 is the generalized section of the pilot control under low discharge state;
Fig. 5 is the generalized section in adjusting the pilot control under flow status;
The schematic diagram of Fig. 6 is the pilot control that is operably connected to reduction valve and electronic control system of the present invention, and the system that shows is in the normal high flow capacity conditions of demand that arrive;
Fig. 7 is the schematic diagram that is similar to Fig. 6, but the system showing during low discharge demand is adjusted pressure;
The schematic diagram of Fig. 8 be normally to the pilot control that is operably connected to reduction valve during high flow capacity demand condition, this reduction valve has connection settable orifice assembly thereon;
Fig. 9 is the schematic diagram that is similar to Fig. 8, and the pressure showing during low discharge demand condition regulates;
Figure 10 is the sectional view that represents another pilot control of the present invention;
Figure 11 is the amplification sectional view in the region " 11 " in Figure 10;
Figure 12 is the schematic diagram of the pilot control of Figure 10, and the system that shows is in normal to high flow capacity conditions of demand, and this pilot control is operably connected to reduction valve and electronic control system;
The schematic diagram of Figure 13 has illustrated the pilot control of Figure 10 during normally arriving high flow capacity demand condition, and this pilot control is operably connected to the reduction valve with connection settable orifice assembly thereon;
Figure 14 is the schematic diagram that is similar to Figure 13, but the pressure showing under low discharge demand condition regulates;
Figure 15 is the amplification sectional view of this settable orifice assembly;
Figure 16 is the figure that the adjustment curve of the settable orifice assembly having in Figure 15 is shown;
Figure 17 is the amplification sectional view of the variable restrictor aperture member of similar Figure 15, but has different bar profiles; And
Figure 18 is the figure that the adjustment curve of the settable orifice assembly having in Figure 17 is shown.
Embodiment
As shown in the drawing, for the object of illustrating, the present invention relates to adjustable hydraulic operating pressure management pilot control, conventionally represented by reference character 100.As here will discussed more fully, this pilot control 100 can be used in multiple application, and is suitable for especially managing the pressure condition in water system.
With reference now to Fig. 1,, the sectional drawing of pilot control 100 is shown.This pilot control 100 comprises the body 102 of common hollow, and it typically comprises the lower body 104 and the lid 106 that are attached to each other by fixed block 108 or similarity piece.
Two septum assemblies are positioned at the inner chamber of this body 102.This first septum assembly comprises have first surface first barrier film 110 of (being expressed as lower surface in Fig. 1), and it limits first fluid pressure chamber 112 at least partly.This first-class body cavity 112 has the fluid passage 114 that allows water inlet and outlet.The common relative second surface of this first barrier film 110 limits the chamber 116 of leading to atmosphere at least partly, as limited by being formed on the passage 118 covering on 106.
Be provided for the device of this first barrier film 110 of bias voltage.More particularly, the first spring 120 is for this first barrier film 110 of bias voltage.As shown, this this barrier film 110 of spring 120 biased downward.This spring 120 is located between lower springs guide portion 122 and upper springs guide portion 124.The bias voltage of this spring 120 can regulate by rotation high pressure adjusting screw 126, and described high pressure adjusting screw engages with upper springs guide portion 124.Packing ring 128 is located between lower springs guide portion 122 and top barrier film 110.This first septum assembly also comprises pressure positioning rod guide portion 130, is positioned as shown the first side of this first barrier film 110.In the time that the first barrier film 110 moves, this first spring 120 compresses or stretches, and lower springs guide portion 122, this packing ring 128 and bar guide portion 130 also move.
Continue with reference to figure 1, this second septum assembly comprises the second barrier film 132, and this second barrier film 132 has first surface, and described first surface coordinates with this first barrier film 110 and limits at least in part this first-class body cavity 112.In mode of execution particularly preferably, the area of this first barrier film 110 is approximately 1: 1 with the ratio of the area of this second barrier film 132.Mode of execution shown in Fig. 1 shows the fluid passage 134 in body 102, for carry out fluid connection between the first and second barrier films 110 and 132.Will be understood that, this first fluid pressure chamber 112 extends between this first and second barrier film 110 and 132.The common relative second surface of the second barrier film 132 limits second fluid pressure chamber 136 at least partly.As from can finding out diagram, this first and second fluid chamber 112 and 136 is isolated each other, and this makes do not have fluid to be communicated with between them.This second fluid pressure chamber 136 is communicated with mobile entrance 138 and outlet 140 fluids that flow.
Bar 142 is connected on this second barrier film 132 and together with barrier film 132 and moves with packing ring 144-148.In the time that the second barrier film 132 moves up and down, gate opening and closing.This gate comprises the dish retainer 150 to pedestal 154 bias voltages by spring 152.In the time that this dish retainer 150 moves away from pedestal 154, as the pressure in first fluid pressure chamber 112 during higher than the power of spring 152 and combination pressure, this just cause this second or bottom barrier film 132 move down, therefore this bar 142 and dish retainer 150 downward, this gate open and allow fluid from entrance 138 by this second or lower flow pressure chamber 136 flow to outlet 140.But, if this second barrier film 132 moves up, the water pressure being greater than in pressure chamber 112 as the bias voltage of the water pressure of the combination by this second chamber 136 and spring 152 or thrust makes it to move up, this dish retainer 150 moves or even engages pedestal 154 to pedestal 154, has so just closed passage or gate between this fluid input 138 and outlet 140.
With reference now to Fig. 1 and Fig. 2,, pressure positioning rod 156 is connected on this second barrier film 132 and along with the motion of barrier film 132 is moved up and down.As found out in Fig. 1 and 2, this bar extends in this first septum assembly, and more particularly advances slidably with respect to bar guide portion 130 and lower springs guide portion 122.Therefore, when this first or top barrier film 110 and bottom or the second barrier film 132 while moving, this pressure positioning rod 156 moves with respect to this lower springs guide portion 122 and bar guide portion 130.In Fig. 2, especially, can find out, this pressure positioning rod 156 has the antelabium 158 that can engage with the convex shoulder of this bar guide portion 130 160.Therefore, this convex shoulder 160 of this bar guide portion is used as block to limit the downward motion of this pressure positioning rod 156.
Continue with reference to Fig. 1 and 2, the upper end 162 of this pressure positioning rod 156 can move into and shift out this lower springs guide portion 122.Be located at equally these lower springs guide portion 122 inside and can engage to limit it with the upper end of pressure positioning rod 156 162 as the spacer 164 of block and move upward.The position of this isolation block 164 can regulate by the second adjusting screw 166 for low-pressure adjusting screw.
High pressure set point regulates by screw 126, and screw 126 compresses or trip spring 120.Low-pressure set point is regulated by screw 166, and screw 166 promotes or reduces this isolation block 164.Isolation block 164 limits the stroke of this pressure positioning rod 156, therefore limits second or the stroke of bottom septum assembly.The convex shoulder of this bar guide portion 130 or block 160 are also used for stroke and the motion of limiting pressure positioning rod 156, therefore also limit this second or stroke and the motion of bottom septum assembly.Therefore, this pressure positioning rod 156, and the second septum assembly thus, by this first or convex shoulder 160 and the isolation block 130 of top septum assembly limit stroke up and down.Certainly, this has limited the motion of dish retainer 150, dish retainer 150 be attached to this second or the bar 142 of bottom septum assembly on the opening and closing between fluid input 138 and the fluid output 140 of second fluid pressure chamber 136 with restriction gate.
In the time that the hydrodynamic pressure in first-class body cavity 112 is equal to or less than low-pressure set point, this gate moves the fluid flow with this second chamber 136 of restricted passage towards closed position.In the time that the pressure in first fluid pressure chamber 112 is equal to or greater than high pressure set point, this gate moves towards enable possition so that fluid flows through this second chamber 136.Equal substantially the outlet pressure of reduction valve at the hydrodynamic pressure at outlet 140 places in the second chamber 136, or the pressure in reduction valve downstream in water system shown in Fig. 6-9.By the pressure in the first pressure chamber 112 of change pilot control 100, this pilot control 100 is controlled high pressure and the low pressure in reduction valve downstream, and here reduction valve is sometimes referred to as main valve.The hydrodynamic pressure changing in the first pressure chamber 112 causes the pressure in the second pressure chamber 136 to regulate between the low and high set point of pilot control 100.
With reference now to Fig. 3,, normal during high flow capacity demand condition, the pressure-acting in the first and second chambeies 112 and 136 second or bottom barrier film 132 on, so that the dish retainer part of this gate 150 is biased into enable possition, as shown.The antelabium 158 of pressure the positioning rod 156 and convex shoulder of this bar guide portion or block 160 engages in this case, and this has limited advancing of pressure positioning rod 156.In the time that pressure positioning rod 156 contacts with pressure positioning rod guide portion 130, as shown in Figure 3, the position of stress management pilot control 100 is in high pressure setpoint adjustments.This high pressure set point determines by the regulating load of high pressure spring 120, and it can regulate by adjusting screw 126.The position of this antelabium 158 is determined by high pressure spring 120 and the equilibrium of forces that acts between the lip-deep pressure of top barrier film 110.As long as the hydrodynamic pressure in this first chamber 112 is greater than the pressure in this second chamber 136, with regard to contact positioning rod guide portion 130, therefore just there is gap in this pressure positioning rod 156 between pressure positioning rod 156 and low-pressure adjusting spacer or block 164.
As mentioned above, the position of this dish retainer 150, yoke 142 and pressure positioning rod 156 is determined by high pressure spring 120 and the equilibrium of forces that acts between the hydrodynamic pressure in the first pressure chamber 112 on the surface area of top barrier film 110.This equilibrium of forces causes stress management pilot control 100 to keep such position, and this position regulates pressure at the high pressure set point place adjusting, as Fig. 3 illustrates.
Continue with reference to figure 3, show the relation between the related pressure between relevant position and first and second chambeies 112 and 136 (being shown as chamber, upper and lower) of the inner member of pilot control 100 in the time of high pressure position.Can find out, due to compared with the second chamber 136, in the first chamber 112, have larger pressure, this orders about this second barrier film 132 downwards and enters this second pressure chamber 136, and therefore pressure positioning rod 156 starts to contact with convex shoulder or the block 160 of pressure positioning rod guide portion 130.This makes 150 motions of retainer dish leave pedestal 154, compresses low pressing spring 152 and opens the sluices, and therefore opens this entrance 138 of this second pressure chamber 136 and exports the fluid passage between 140.Like this, the high pressure set point place of this pilot control 100 in Fig. 3 keeps regulating the position of pressure.
Under low discharge demand condition, as shown in Figure 4, the pressure-acting in chamber 112 and 136 is in bottom barrier film 132 with pedestal 154 and the closed position bias voltage towards gate by this dish retainer 150, as shown.Under this condition, the pressure in the first chamber 112 is less than or equal to pressure in the second chamber 136 and the bias voltage of spring 152, causes bottom barrier film 132 to move up and enters the first chamber 112, as shown in Figure 4.Result is that dish retainer 150 moves up, and enters the position of closing gradually with respect to pedestal 154.Certainly, this has limited the path of fluid through entrance 138 and outlet 140.
In the time that the pressure in the first chamber 112 is less than the second chamber 136, pressure positioning rod 156 regulates spacer or block 164 to move towards low-pressure, or is even moved into contact low-pressure adjusting spacer or block 164.In Fig. 4, illustrate that pressure positioning rod 156 is moved into this spacer of contact or block 164, is illustrated in the pilot control 100 that low-pressure set point place regulates.Low-pressure set point regulates the adjusted position of spacer or block 164 to decide by low-pressure adjusting screw 166 by adjusted position and the low-pressure of high pressure spring 120.Low-pressure regulate the position of spacer or block 164 be by high pressure spring 120 and act on the lip-deep pressure of the first barrier film 110 and act on second or the lip-deep pressure of bottom barrier film 132 between equilibrium of forces decide.
With reference now to Fig. 5,, during interflow condition, in the scope of this stress management pilot control 100 between low and high pressure set point, regulate.Under this sundries, between the convex shoulder 160 of pressure positioning rod 130 and the antelabium 158 of pressure positioning rod guide portion 156, there is gap, as shown in Figure 5.
During interflow condition, the water pressure in this first chamber 112 is approximately equal to water pressure in (or be a bit larger tham or be slightly smaller than) second chamber 136 and the bias voltage of spring 152.In this case, between the convex shoulder of pressure positioning rod 130 or block 160 and the antelabium 158 of pressure positioning rod guide portion 156, there is gap, as mentioned above, show that the transition region of stress management pilot control 100 between low and high pressure set point regulates.Upper end 162 and spacer or block 164 relation at interval of pressure positioning rod guide portion 156.Like this, in interflow, pressure positioning rod 156 is advanced between low-pressure block 164 and high pressure block or convex shoulder 160.This second or bottom barrier film 132 in middle position, and this dish retainer 150 also mediates with respect to pedestal 154, in the time that pilot control 100 regulates pressure at high pressure set point place, fluid flow to outlet 140 from entrance 138 like this, but freely mobile not resembling in Fig. 3.
Adjustable stress management pilot control 100 can be used to manage the pressure in water distribution system.The relative value of the first pressure chamber 112 of this adjustable pressure management pilot control 100 is used for controlling the position of reduction valve 200 (being sometimes referred to as in this article main valve), regulating system pressure between height and low-pressure set point like this.
The first example of this system has been shown in Fig. 6 and 7, and wherein the pressure in the first chamber 112 of stress management pilot control 100 is controlled by the activity of electric actuation valve.As Fig. 6 and 7 illustrates, show two electric actuation valves 302 and 304, as solenoid valve, it for example can alternately be opened and closed by electronic controller 306, to remain on the required pressure in the first pressure chamber 112 of pilot control 100.
With reference to figure 6 and 7, can find out that valve 302 and valve 304 are electrically connected to controller 306.This first valve 302 is for example connected to the entrance 202 of reduction valve 200 via pipeline 402 fluids.This second electronic control valve 304 is for example connected to the outlet 204 of reduction valve 200 via pipeline 404 fluids.Fixing restriction 400 is located between the entrance 202 of reduction valve 200 and the entrance 138 of the second pressure chamber 136 of pilot control 100.This for example realizes by passage 406.Fluid passage 408 fluids are connected to the fluid passage 114 in the first chamber 112 of pilot control 100, and fluid is connected in electrically-controlled valve 302 and 304.
Reduction valve or main valve 200 comprise the valve body 206 that limits entrance 202 and outlet 204.Main valve seat 208 is in the centre of entrance 202 and outlet 204.Main valve member can move leaving the enable possition of main valve seat 208 and engage between the closed position of main valve seat.This main valve member 210 comprises for guiding main valve member 210 to engage or departing from the motion bar 212 of this main valve seat 208.Spring 214 is typically also realized the motion that helps and guide main valve member 210.Main valve barrier film 216 is connected in main valve member 210 and extends between main valve body 206 and the lid 218 of main valve 200, to limit fluid control chamber 220 between barrier film 216 and other parts of lid 218 or body 206.Control chamber 220 comprises the ingress port 222 being connected with pilot valve 100 fluids via passage 410 for for example.
During high flow capacity or high conditions of demand, as described in here will be more completely, less fluid is directed into fluid control chamber 220, produce lower pressure, and make main valve member 210 can move away main valve seat 208 to enter enable possition, as shown in Figure 6, to stop more multithread body to flow through reduction valve or main valve 200.But, in the process of low discharge or low conditions of demand, as described in Figure 7, enter fluid conductance in the control chamber 220 of reduction valve and cause main valve member 210 and move down and engage this main valve seat 208, and reduce the fluid stream by reduction valve or main valve 200.
Referring again to Fig. 6, normal, in the process of high flow capacity state, the high pressure management chamber 112 of pilot control 100 is apparently higher than the pressure at pressure meter P3 place.When solenoid electric valve 302 is opened and when solenoid electric valve 304 is cut out, the pressure in the first chamber 112 is kept above the pressure at pressure meter P3 place.The activity of this solenoid electric valve 302 and 304 is to be controlled by process controller 306.This cause stress management pilot control 100 high pressure set point place or near adjusting pressure.
The position of reduction valve or main valve 200 is by the fluid current control by stress management pilot control 100.The hydrodynamic pressure in the outlet port in the second chamber 136 equals the outlet pressure of reduction valve 200 substantially.In the time that the flow area of the gate by stress management pilot control 100 equals the flow area of fixed throttle port 400, seldom or do not have fluid to flow to into or flow out the pressure chamber 220 of main valve 200.In this case, the position of reduction valve 200 remains unchanged, relatively constant by the flow of valve 200 and the pressure at pressure meter P3 place.
In the time of flow system flow increase in demand or reduction, stress management pilot control 100 responds by increasing or reduce by the flow area of this second pressure chamber 136.In the time being greater than or less than the flow area of fixed throttle port 400 through the flow area of this gate or the second pressure chamber 136, this will correspondingly make fluid stream move into or discharge the lid pressure chamber 220 of reduction valve 200 so, and this causes reduction valve position to change.As implied above, Fig. 6 shows normal to high flow capacity demand, and therefore pressure reducing valve component 200 is in an open position to allow water therefrom to flow through.
During normally arriving high flow capacity demand status, as shown in Figure 6, the parts of pilot control 100 will be positioned at position as shown in Figure 3, or regulate between block 160 and 164, or make antelabium 158 engage convex shoulder or block 160 at high pressure set point place.This gate is opened at least partly or all, and wherein this dish retainer 150 will move away pedestal 154, thereby allows fluid to flow into entrance 138 and flow out outlet 140.
With reference now to Fig. 7,, illustrate that this system regulates pressure during low discharge demand.In low discharge situation, the pressure in first chamber 112 (or stress management chamber) of pilot control 100 is less than or equal to the pressure at measuring meter P3 place.When solenoid electric valve 302 cuts out and when solenoid electric valve 304 opens, the pressure in the first chamber 112 is maintained at the force value at measuring meter P3 place.When adjustable pressure management pilot control 100 is during in low-pressure set point pattern, as mentioned above and as Fig. 7 and 4 as shown in, this pressure positioning rod 156 contacts with low-pressure adjusting spacer or block 164.In the time that they contact, this pilot control 100 low-pressure set point place or near regulate.
In the time that the hydrodynamic pressure in the first chamber 112 is less than the hydrodynamic pressure in the second chamber 136, cross second or the pressure difference of bottom barrier film 132 upwards this pressure positioning rod 156 of bias voltage regulate spacer or block 164 until it starts to contact this low-pressure.Further upwards advance and for example limited by the desired location of spacer or block 164 by adjusting low-pressure adjusting screw 166, low-pressure adjusting screw 166 is for setting up the low-pressure set point of adjustable pressure management pilot control 100.
In the time that the hydrodynamic pressure in the first chamber 112 is equal to or less than the pressure at measuring meter P3 place, will cause this stress management pilot control 100 low-pressure set point place or near regulate, as mentioned above.This increases the pressure that causes pressure adjusting or main valve lid pressure chamber 220, closes gradually main valve member 210 towards main valve seat 208, makes lower fluid stream through there, as shown in Figure 7.The increase that enters the pressure of control chamber 220 and fluid stream is caused by the following fact, coiling retainer 150 moves towards pedestal 154, effectively close the gate of the second septum assembly, fluid stream between restriction or prevention entrance 138 and outlet 140, fluid is circulated in pipeline 410 and in control chamber 220, it acts on barrier film 216 to promote valve member 210 downwards towards pedestal 208, and closes reduction valve or main valve 200.
Utilize electronic processes controller and electronic control valve, as shown in above those with describe, always not desirable.Electronic processes controller and solenoid valve or analog can increase cost and the complexity of system.In addition, need power supply to these electronic component power supplies.Therefore,, in a particularly preferred mode of execution, as shown in FIG. 8 and 9, use the system of all-hydraulic control and adjusting.This system is combined with adjustable settable orifice assembly, and these restriction assemblies generally represent with mark 500.U.S. Patent Application Serial Number in not authorization is in 11/927,474, to disclose in detail exemplary adjustable variable restriction assembly, by reference content is wherein incorporated into this.
With reference now to Fig. 8,, this stress management pilot control 100 is by the activity control of adjustable settable orifice assembly 500.Functions of the position of this main valve or reduction valve 200 by the flow of this adjustable settable orifice assembly 500.
With reference now to Figure 15,, variable restriction assembly 500 comprises the housing 502 that limits fluid input 504 and fluid output 506.Typically, this housing 502 is connected to this main valve lid 218, as shown.But the hydrodynamic pressure in variable restriction assembly 500 and reduction valve or main valve 200 is isolated each other.Bar 508 is connected to the bar 212 of reduction valve and is located at slidably the inside of the housing 502 of variable restriction assembly 500.By this way, in the time that main valve member 210 and bar 212 move up and down, the bar 508 of this variable restriction assembly 500 also moves up and down.This housing 502 and bar 508, and any insert or be located at the parts between them form variable restriction between this entrance 504 and outlet 502.Thereby, the position according to bar 508 in housing 502 inside, the fluid flow between entrance 504 and outlet 506 changes.
Fig. 8 illustrates this adjustable stress management pilot control 100 in high pressure set point pattern.As described in only, this is the position on convex shoulder or the block 160 of the convex shoulder of pressure positioning rod 156 or the antelabium guide portion 130 that is positioned at this pressure positioning rod.As long as this pressure positioning rod antelabium 158 contacts with the convex shoulder of this pressure position bar guide portion 160, this stress management pilot control 100 just regulates near high pressure set point place or its.In the time regulating under this pattern, the pressure of pressure meter P2 place and the first pressure chamber 112 is higher than the pressure of pressure meter P4 place and the second pressure chamber 136.The pressure at pressure meter P2 place is higher than the pressure at pressure meter P4 place, and this is because be greater than by the flow area of adjustable settable orifice assembly 500 by the flow area of this fixing restriction 412.
During normal paramount traffic conditions, the pressure at the pressure at pressure meter P2 place higher than pressure meter P4 place, makes pressure regulate pilot control 100 by towards enable possition bias voltage.When towards enable possition bias voltage, dish retainer 150 moves away pedestal 154, thereby open this gate and fluid passage between entrance 138 and outlet 140.When towards enable possition bias voltage, regulate the flow area of pilot control 100 to be greater than by the flow area of fixed throttle port 400 by this pressure.This causes fluid to leave main valve lid pressure chamber 222, and this causes this main valve member 210 leave main valve seat 208 and open.This main valve or pressure regulator valve 200 will continue to open, until the pressure at pressure meter P4 place is increased to the high pressure set point that regulates pilot control 100 to set up by pressure.
When the position of reduction valve or main valve 200 is during in normal paramount traffic conditions, be limited through the fluid stream of this settable orifice assembly 500, make the pressure at pressure meter P2 place be greater than the pressure at pressure meter P4 place.In Fig. 8, can find out, the fluid passage 114 of leading to the first pressure chamber 112 of this pilot control 100 is for example connected to this settable orifice assembly 500 by pipeline 414 and 416 fluids.The outlet 506 of this settable orifice assembly 500 is for example connected to the outlet 140 in the outlet 204 of main valve or reduction valve 200 and the second chamber 136 of this pilot control 100 by pipeline 418 fluids.As long as the pressure in the first pressure chamber 112 is greater than the pressure of the second pressure chamber 136 of pilot control 100, this pressure regulates pilot control 100 to regulate near this high pressure set point or its, as shown in Figure 8.
With reference now to Fig. 9,, this adjustable stress management pilot control 100 is illustrated as in low-pressure set point pattern.As mentioned above, at pressure position bar 156, and the position that especially its upper end portion 162 and low-pressure regulate spacer or block 164 to contact, this adjustable stress management pilot control 100 regulates near this low-pressure set point or its.In the time that the flowing pressure in the first chamber 112 is less than the pressure in the second chamber 136, cross second or the pressure reduction of bottom barrier film 132 upwards bias pressure positioning rod 156 regulate spacer or block 164 until it starts to contact this low-pressure.This position is shown in Figure 4.
Under low discharge state, the pressure at pressure meter P2 place is less than the pressure at pressure meter P4 place, and this causes pressure to regulate pilot control 100 towards closed position bias voltage.Namely, this closing gate or almost close, its mid-game retainer 150 moves towards pedestal 154, limits or has stoped the fluid between entrance 138 and outlet 140 to flow.When towards closed position bias voltage, regulate the flow area of pilot control 100 to be less than the flow area through fixed throttle port 400 through pressure.This causes fluid to flow to into decompression or main valve lid pressure chamber 222, causes main valve position to be moved to closed position direction, as shown in Figure 9.This main valve or reduction valve 200 close continuing until the pressure decreased at pressure meter P4 place to regulating the low-pressure set point set up of pilot control 100 by pressure.When the position of main valve or reduction valve 200 is during in low discharge state, as shown in Figure 9, unrestricted through the fluid stream of this settable orifice assembly 500.Flow area through fixed throttle port 400 is less than the flow area through settable orifice assembly 500, causes the pressure at pressure meter P2 place to be less than the pressure at pressure meter P3 place.
When near low-pressure regulates pattern or its, the pressure at pressure meter P2 place and the pressure in the first chamber 112 are equal to or less than the pressure in pressure and second chamber 136 at pressure meter P4 place.At the pressure at pressure meter P2 place, lower than the pressure in pressure meter P4 place, this is because be less than the flow area through adjustable settable orifice assembly 500 through the flow area of fixed throttle port 412.The official post of this flow area must be compared with being supplied to fixed throttle port 412, and more fluid stream leaves through adjustable or variable restriction assembly 500.As a result, the pressure decreased in the first chamber 112 is to the value less than or equal to the pressure at pressure meter P3 place and the pressure in the second pressure chamber 136.As long as pressure in the first pressure chamber 112 is less than the pressure of this second pressure chamber 136, this pressure regulates pilot control assembly 100 to regulate near low-pressure set point or its.
With reference now to Figure 10 and 11,, illustrate improved pressure regulate pilot control 100 '.This pilot control 100 ' move under same principle, and there is the element identical with the pilot control 100 that illustrates and describe above.For the ease of explain, pilot control 100 and 100 ' in common element represent with identical mark.The pilot control 100 illustrating above and describe and pilot control 100 ' between main difference be, replace the first-class body cavity 112 and the second fluid pressure chamber 136 that are separated from each other completely each other, in the first septum assembly and the second septum assembly, be formed with flow channel, this flow channel allows to have fluid to be to a certain degree communicated with between hydrodynamic pressure chamber 112 and 136.As will be herein more fully as described in, this fluid passage is opened or closes according to the relative position of the first and second septum assemblies.
Continue with reference to Figure 10 and 11, will see that one or more holes 170 are formed in bar guide portion 130, it is communicated with first fluid pressure chamber 112 fluids.Groove 172 or other openings are formed between spring guide portion 122 and pressure position bar 156, to allow fluid to flow to the passage 174 forming along the length of pressure positioning rod 156 from hole 170, by the passage 176 that forms through bar 142 and enter second fluid pressure chamber 136.In the time that the first and second barrier films 110 and 132 move away from each other, therefore the assembly relevant to them moves away from each other, the space that allows fluid to flow through hole 170 and form between spring guide portion 122 and pressure positioning rod 156, and by the passage 174 and 176 of aiming at or being otherwise communicated with in fluid, enter in second fluid pressure chamber 136.
In Figure 10 and 11, can find out, this spacer 164 has the protuberance 178 extending from its end, and it is as the stopper of the passage 174 of confining pressure positioning rod, to prevent that the fluid between the first and second hydrodynamic pressure chambeies 112 and 136 from flowing.This occur in that the first and second septum assemblies move towards each other or top or lower component in the time that corresponding assembly moves, thereby stopper 178 enters the fluid passage 174 of pressure positioning rod 156.In a particularly preferred mode of execution, as shown, this outstanding plug 178 has variable diameter, and the minor diameter reducing gradually as having, to form aciculiform structure, has produced vario valve like this between plug 178 and passage 174.Therefore, along with stopper 178 is due to barrier film 110 and 132 and the movement of relevant components element and inlet passage neutralization is extracted out from passage, the continuous opening and closing of this passage 174.It has been found that pilot control 100 ' in provide pilot control 100 ' better control and more level and smooth operation in conjunction with such fluid flowing passage.
With reference now to Figure 12,, show the pilot control 100 that is combined in assembly or system ', for together with electric actuation valve 302 and electronic controller 306 between high and low pressure set point regulating system pressure.The operation of this and the above-mentioned system about Fig. 6 and 7 is similar.But, in this case, replace two electric actuation valves 302 and 304, use single electric actuation valve 302.Replace the second electric actuation valve 304, fixed throttle port 420 is arranged in pipeline 404.This fixed throttle port preferably has fluid passage, its size be arranged to allow than by pilot control 100 ' the lower fluid stream of passage 170-176 pass through.In the time that this single electric actuation valve 302 is switched on or opens, when top barrier film and bottom barrier film move away from each other, open the sluices 150 time, by allow more fluid stream and therefore larger pressure enter upper pressure chamber 112, drive pilot control 100 ' and therefore drive system towards high pressure set point.Figure 12 is illustrated in the system of high pressure set point.
But in the time that solenoid valve 302 cuts out, the pressure in the relative top of pressure or the first pressure chamber 112 in bottom or second fluid pressure chamber 136 increases, and along with bar 142 constantly upwards and towards spacer 164 moves, will drive this system towards low-pressure set point.Not only coiling retainer 150 moves towards pedestal 154, close the entrance 138 of second fluid pressure chamber 136 and export the gate channel between 140, and the fluid passage 174 that this stopper 178 also moves into pressure positioning rod 156 is to close gradually the fluid passage 170-176 between hydrodynamic pressure chamber 112 and 136.When this system is during in low discharge or low-pressure pattern, this second barrier film 132 moves up, and the element of this reduction valve or main valve 200 is arranged to as shown in Figure 7, with the fluid stream of this main valve 200 of restricted passage.
With reference now to Figure 13 and 14,, by Fig. 8 and mode similar described in Fig. 9, settable orifice assembly 500 is attached on reduction valve or main valve 200, thus by shown in pilot control 100 ' be attached in the pressure regulating system of hydraulic control.With particular reference to Figure 13, in the time of normal paramount flow status, the pressure at pressure meter P2 place is greater than the pressure at pressure meter P4 place.This causes this pressure to regulate pilot control 100 ' towards enable possition bias voltage.When present dynasty enable possition bias voltage, by this pressure regulate pilot control 100 ' flow area be greater than by the flow area of fixed throttle port 400.Namely, pressure in top or first fluid pressure chamber 112 is greater than the hydrodynamic pressure in second fluid pressure chamber 136, this second barrier film 132 is moved down, this dish retainer 150 moves away pedestal 154, thereby opens the entrance 138 of this second fluid pressure chamber 136 and export this gate or the passage between 140.Pressure in first-class body cavity 112 changes by opening or the passage 174 of this pressure positioning rod 156.Move because bar 156 relatively low pressure power regulate the position of spacer 164, make it move away to open passage 174 completely, fluid is passed wherein and flow, in this position, this main valve 200 advances or regulates at this place to high pressure set point, as shown.
This causes fluid stream to leave this main valve cover cavity 220, makes this main valve 210 upwards locate or open.Main valve 200 is opened continuing until the pressure at P4 place is increased to the high pressure set point that is regulated pilot control 100 ' set up by this pressure.
When main valve 200 positions are during corresponding to normal paramount flow status, unrestricted through the fluid stream of variable restriction assembly 500, this causes the pressure at P2 place to be greater than the pressure at P4 place.Therefore, the pressure in the first pressure chamber 112 be greater than pilot control 100 ' the second pressure chamber 136 in pressure.As long as first or upper chambers 112 in pressure be greater than second or the pressure of lower chamber 136, this pressure regulates near pilot control 100 ' regulate high pressure set point or its.
With reference now to Figure 14,, under low discharge state, equal the pressure at P4 place at the pressure at P2 place.In the time that pressure P 2 equals pressure P 4, this causes this pressure to regulate pilot control 100 ' towards closed position bias voltage, when the pressure in second fluid pressure chamber 136 be equal to or greater than pilot control 100 ' the pressure of first-class body cavity 112 time, the motion of the second barrier film 132 is moved this dish retainer 150 towards pedestal 154.In fact, if pressure approaches or equals the pressure in first fluid pressure chamber 112 in second fluid pressure chamber 136, spring 152 will move up the second septum assembly and second barrier film 132 that therefore moves up, and towards pedestal 154 displacement disc retainers 150, therefore close this gate.This is equally towards spacer 164 movement pressure positioning rods 156 and pressure positioning rod 156 is engaged with spacer 164, and therefore stopper 178 is closed the passage 174 of fluid stream gradually.
When pilot control 100 ' when towards closed position bias voltage, by pressure regulate pilot control 100 ' flow area be less than by the flow area of fixed throttle port 400, fluid is flow to and become owner of valve cover cavity 220, main valve barrier film 216 and main valve member 210 are moved towards closed position.Main valve 200 is closed continuing, until the pressure drop at P4 place is to regulating pilot control 100 ' definite low-pressure set point by pressure.
In the time that main valve 200 moves towards closed position, due to low discharge state, restricted by the fluid stream of settable orifice assembly 500.Be greater than by the flow of settable orifice assembly 500 by the flow of fixed throttle port 400, make the pressure at P2 place no better than the pressure at P4 place.Typically, this pilot control 100 ' first fluid pressure chamber 112 and second fluid pressure chamber 136 between flow approximate identical with the flow by settable orifice assembly 500.As long as pilot control 100 ' the first and second hydrodynamic pressure chambeies 112 and 136 in pressure approach and equate, this pressure regulates near pilot control 100 ' regulate on low-pressure set point or it.
Due to the geometrical shape of a part 510 of advancing between the entrance 504 at settable orifice assembly 500 of bar 508 and outlet 506, make can change by the flow area of settable orifice assembly 500, at least can partly change.The geometrical shape of the part 510 shown in Figure 15 is transitioned into the geometrical shape of unrestricted flow area gradually from restricted flow area geometrical shape, as shown in the figure line in Figure 16.The geometrical shape of different types of settable orifice can be for customizing the pressure adjustment profile between low and high pressure set point.For example, the flute profile of the geometrical shape 510 of the bar 508 shown in Figure 17 ' use on variable restrictor bar 508, it is mobile transition flow area profile gradually not.But the structure of this groove (or flow area) is constant.By having constant slotted shape, from unrestricted flow area to restricted flow area, the transition of (otherwise or) is unexpected, as shown in the figure line in Figure 18.Although flow profile 510 in Figure 17 ', this settable orifice assembly 500 is the same, through fluid stream or all told or the restriction completely of the groove structure of bar, or " opening " or " pass ".Like this, flow can not resemble the settable orifice bar geometrical construction in Figure 15 and change with valve position.The sudden change of flow area geometrical shape has the effect of the direct jump between the low and high pressure set point causing on stress management pilot control 100.From product application point, this have low or high conditions of demand and again need to be between low and high pressure set point may be useful in the water distribution system of transition gradually.In this case, user may wish to tilt (ramp) as quickly as possible between low-pressure and high pressure set point, this flow profile 510 shown in Figure 17 ' will realize this point.
From the foregoing, can find out, this adjustable hydraulic operating pressure management pilot control assembly 100 can be used for setting the spikes/low-points of water pressure, with during low demand and control the water pressure of this system during high demand.In the time being combined into a larger assembly that is connected to reduction valve or system, be achieved for the improved traffic driven valve system of automatically controlling downstream pressure between selected set point.
Although described several mode of executions in detail for the object of explaining, can also make a variety of changes without departing from the scope and spirit of the present invention.Therefore, the present invention will only be subject to the restriction of described claim.
Claims (18)
1. a pilot valve assembly of controlling the reduction valve of water system between high pressure set point and low-pressure set point, this pilot valve assembly comprises:
Limit the body of inner chamber;
The first septum assembly, it is positioned at this inner chamber and comprises having the first barrier film of first surface and the first biased member for this first barrier film of bias voltage, and described first surface limits and the first fluid pressure chamber that is formed on the fluid passage in fluid communication in this body at least in part; With
The second septum assembly, it is positioned at this inner chamber and comprises the second barrier film and the second biased member, this second barrier film has the second surface that limits at least in part the first surface of this first fluid pressure chamber and limit at least in part second fluid pressure chamber, this second fluid pressure chamber be formed on fluid input in this body and fluid output and the gate fluid between this fluid input and this fluid output and be communicated with, described gate is used for controlling fluid and flows through this second fluid pressure chamber, and the second biased member is for this gate of bias voltage and this second barrier film;
Wherein, be substantially equal to the outlet pressure of this reduction valve at the hydrodynamic pressure in the outlet port of this second fluid pressure chamber; And
Wherein, this second septum assembly comprises bar, and this bar extends in this first septum assembly, and in the time that this first septum assembly and this second septum assembly move relative to each other, described bar moves slidably with respect to described the first septum assembly.
2. pilot valve assembly as claimed in claim 1, wherein, in the time that the hydrodynamic pressure in first fluid pressure chamber is approximately equal to or less than greatly low-pressure set point, this gate moves towards closed position, pass through second fluid pressure chamber with limit fluid stream, in the time that the hydrodynamic pressure in first fluid pressure chamber is equal to or greater than high pressure set point, this gate moves towards enable possition so that fluid stream passes through this second fluid pressure chamber.
3. pilot valve assembly as claimed in claim 1, comprises for this first biased member of selective control to adjust the controlling device of high pressure set point.
4. pilot valve assembly as claimed in claim 3, wherein this first biased member comprises spring, this controlling device comprises the first adjusting screw being connected with this spring.
5. pilot valve assembly as claimed in claim 1, wherein this second biased member comprises the spring towards this gate of closed position bias voltage.
6. pilot valve assembly as claimed in claim 1, wherein the ratio of the area of this first barrier film and the second barrier film is about 1:1.
7. pilot valve assembly as claimed in claim 1, wherein the first septum assembly comprises the first block and second block of the movement for limiting this bar.
8. pilot valve assembly as claimed in claim 7, wherein, in the time that this first barrier film moves, this first block and the second block move.
9. pilot valve assembly as claimed in claim 8, comprises for regulating the first block to regulate the controlling device of low-pressure set point.
10. pilot valve assembly as claimed in claim 9, wherein this controlling device comprises the second adjusting screw.
11. pilot valve assemblies as claimed in claim 1, wherein the inlet fluid of second fluid pressure chamber is connected to the valve actuation pressure chamber of this reduction valve.
12. pilot valve assemblies as claimed in claim 1, comprise the fixed throttle port between the entrance of this second fluid pressure chamber and the entrance of this reduction valve.
13. pilot valve assemblies as claimed in claim 1, comprise that fluid is connected at least one electrically-controlled valve of this first fluid pressure control cavity, for regulating the hydrodynamic pressure of this first fluid pressure chamber.
14. more ask the pilot valve assembly as described in 13 as right, and wherein said at least one electrically-controlled valve comprises: the first electrically-controlled valve, and this first electrically-controlled valve fluid is connected to entrance and this first fluid pressure chamber of reduction valve; The second electrically-controlled valve, its fluid is connected to outlet and this first fluid pressure chamber of this reduction valve; And electronic controller, for controlling this first electrically-controlled valve and the second electrically-controlled valve.
15. pilot valve assemblies as claimed in claim 1, comprise settable orifice assembly, this settable orifice assembly is operably connected to reduction valve and fluid is connected on pilot valve assembly, and between the entrance and exit of this settable orifice assembly, has variable fluid stream.
16. pilot valve assemblies as claimed in claim 15, comprise variable restriction fluid stream bar, it is connected on reduction valve and is slidably disposed between the entrance and exit of fluid of settable orifice assembly, wherein in the time of reduction valve opening and closing, the fluid rheology of the entrance and exit by settable orifice assembly.
17. pilot valve assemblies as claimed in claim 1, wherein first fluid pressure chamber and second fluid pressure chamber fluid isolation relative to each other.
18. pilot valve assemblies as claimed in claim 1, comprise the fluid passage between first fluid pressure chamber and the second fluid pressure chamber of pilot valve assembly, and this fluid passage is opened or closed to the relative position between the first septum assembly and the second septum assembly.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18020009P | 2009-05-21 | 2009-05-21 | |
| US61/180,200 | 2009-05-21 | ||
| US12/782,236 | 2010-05-18 | ||
| US12/782,236 US8381761B2 (en) | 2009-05-21 | 2010-05-18 | Pressure management control valve assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101893124A CN101893124A (en) | 2010-11-24 |
| CN101893124B true CN101893124B (en) | 2014-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010240142.7A Expired - Fee Related CN101893124B (en) | 2009-05-21 | 2010-05-21 | Pressure management control valve assembly |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8381761B2 (en) |
| EP (1) | EP2256391B1 (en) |
| CN (1) | CN101893124B (en) |
| CA (1) | CA2704904C (en) |
| ES (1) | ES2394184T3 (en) |
| IL (1) | IL205877A (en) |
| PT (1) | PT2256391E (en) |
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| JP5475716B2 (en) * | 2011-04-27 | 2014-04-16 | 株式会社コガネイ | Internal pilot pressure reducing valve |
| CN102537445B (en) * | 2011-10-10 | 2013-10-30 | 张周卫 | Control safety valve for LNG (liquefied natural gas) low-temperature process |
| GB2498789B (en) * | 2012-01-30 | 2019-06-26 | Aes Eng Ltd | Valve |
| CN102705549B (en) * | 2012-06-19 | 2013-11-27 | 杭州良工阀门有限公司 | Pressure reducing valve for nuclear power fire fighting |
| CN102913654B (en) * | 2012-11-01 | 2014-08-13 | 卓旦春 | Pressure reducing valve |
| US9176505B2 (en) * | 2012-12-28 | 2015-11-03 | Emerson Process Management Regulator Technologies, Inc. | Backpressure regulator with easy pump start-up |
| CN103335143A (en) * | 2013-07-16 | 2013-10-02 | 南京浦镇海泰制动设备有限公司 | Pressure reducing valve capable of outputting pressure selectively |
| CN104806797B (en) * | 2013-12-31 | 2018-02-23 | 缪勒Sv有限公司 | Automatic flow control system and guide valve component |
| DE102015005832B3 (en) * | 2015-05-07 | 2016-11-03 | Samson Aktiengesellschaft | Field device for regulating a process fluid flow |
| AT517391B1 (en) | 2015-07-03 | 2018-11-15 | Sonderhoff Eng Gmbh | valve means |
| CN105114675B (en) * | 2015-08-23 | 2018-02-23 | 李志刚 | A kind of adjustable constant pressure difference valve |
| CN105757303B (en) * | 2016-03-29 | 2018-07-31 | 上海康措流体控制有限公司 | A kind of control pressurer system for aircraft refuelling |
| DE102017002034A1 (en) * | 2016-07-20 | 2018-01-25 | Lubing Maschinenfabrik Ludwig Bening Gmbh & Co. Kg | Pressure reducer for animal drinking bowls and method for adjusting at least one pressure reducer for animal drinking bowls |
| CN108052136A (en) * | 2018-01-23 | 2018-05-18 | 中国长江电力股份有限公司 | A kind of pressure reducing valve pressure intelligent regulating device and method |
| US10774939B2 (en) * | 2018-04-12 | 2020-09-15 | Cla-Val Co. | Valve with integral insert-cast seat and related method |
| CN110701322A (en) * | 2018-07-09 | 2020-01-17 | 上海气立可气动设备有限公司 | Energy-saving high-capacity direct-acting type precise pressure-regulating filter valve |
| US11016514B2 (en) * | 2018-10-05 | 2021-05-25 | Emerson Process Management Regulator Technologies, Inc. | Control line stabilizer for a pressure regulator |
| US20220187857A1 (en) * | 2020-12-10 | 2022-06-16 | Griswold Industries | Control system for regulating waterworks pressure |
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- 2010-05-20 IL IL205877A patent/IL205877A/en active IP Right Grant
- 2010-05-20 PT PT101633766T patent/PT2256391E/en unknown
- 2010-05-20 ES ES10163376T patent/ES2394184T3/en active Active
- 2010-05-20 CA CA 2704904 patent/CA2704904C/en not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| IL205877A (en) | 2015-11-30 |
| US8381761B2 (en) | 2013-02-26 |
| CA2704904C (en) | 2015-02-17 |
| CN101893124A (en) | 2010-11-24 |
| EP2256391A3 (en) | 2011-06-22 |
| EP2256391A2 (en) | 2010-12-01 |
| US20100294970A1 (en) | 2010-11-25 |
| IL205877A0 (en) | 2010-12-30 |
| CA2704904A1 (en) | 2010-11-21 |
| PT2256391E (en) | 2012-12-11 |
| ES2394184T3 (en) | 2013-01-23 |
| EP2256391B1 (en) | 2012-10-10 |
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